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Epoxy resin system for casting process of wind electricity generation vanes

An epoxy resin system and wind power generation blade technology, applied in wind power generation, wind power generators, wind power generators consistent with the wind direction, etc., to achieve the effects of long operating time, good fiber impregnation, and low system viscosity

Inactive Publication Date: 2009-11-25
株洲时代工程塑料制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the various problems of most existing casting epoxy resin systems and meet the needs of the market, the present invention provides an epoxy resin system for the casting process of wind power blades, which has low viscosity and long gel time It can meet the technical performance required for the production of wind power blades, and at the same time, the performance of the casting body also meets the requirements for use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Epoxy resin is composed of bisphenol A epoxy resin E-51: bisphenol F epoxy resin=6: 4 (mass ratio); Reactive diluent is butanediol diglycidyl ether; Component H is epoxy resin: Reactive diluent = 90:10 (mass ratio) epoxy resin mixture with a viscosity of 1126mPa·s (30°C). Component G is a mixed amine combination of 1,10-decanediamine: isophordione: caprolactam: m-phenylenediamine: polyetheramine D-230=5:35:15:10:35 (mass ratio), A liquid mixture with a viscosity of <80cP at room temperature.

[0017] Mix and cast with component H:component G=100:35 (mass ratio), the initial viscosity of the mixture is 30°C), the gel time is ≥2.5 hours (35°C), and the exothermic peak is in the thin laminate ≤96°C, exothermic peak in interlayer materials ≤67°C, other properties are shown in Table 1.

[0018] The performance table of table 1 embodiment 1

[0019] Solidification system

Embodiment 2

[0021] Epoxy resin is composed of bisphenol A epoxy resin E-56: bisphenol F epoxy resin=7: 3 (mass ratio); Reactive diluent is butanediol diglycidyl ether; Component H is epoxy resin: Reactive diluent = 80:20 (mass ratio) epoxy resin mixture with a viscosity of 1104mPa·s (30°C). Component G is aminoethylpiperazine: isophordione: butyrolactam: 2-hydroxyl-1,4-p-phenylenediamine: polyetheramine D-230=10:25:15:15:35 ( Mass ratio) of mixed amine combination, a liquid mixture with a viscosity of <80cP at room temperature.

[0022] Mix and cast with component H:component G=100:35 (mass ratio), the initial viscosity of the mixture is 30°C), the gel time is ≥3 hours, and the exothermic peak in the thin laminate is ≤93°C, The exothermic peak in the interlayer material is ≤64°C, and other properties are shown in Table 2.

[0023] The performance table of table 2 embodiment 2

[0024] Solidification system

Embodiment 3

[0026] Epoxy resin is composed of bisphenol A epoxy resin E-56: bisphenol F epoxy resin=8: 2 (mass ratio); Reactive diluent is ethylene glycol diglycidyl ether; Component H is epoxy resin: Reactive diluent = 75:25 (mass ratio) epoxy resin mixture, viscosity is 1202mPa·s (30°C). Component G is aminoethylpiperazine: isophordione: 3-methyl-2-pyrrolidone: 2-hydroxy-1,4-p-phenylenediamine: polyetheramine D-230=10:25:15 : 15:35 (mass ratio) mixed amine combination, a liquid mixture with a viscosity of <80cP at room temperature.

[0027] Mix and cast with component H:component G=100:35 (mass ratio), the initial viscosity of the mixture is 30°C), the gel time is ≥3 hours, and the exothermic peak in the thin laminate is ≤93°C, The exothermic peak in the interlayer material is ≤64°C, and other properties are shown in Table 3.

[0028] The performance table of table 3 embodiment 3

[0029] Solidification system

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Abstract

The invention discloses an epoxy resin system for casting process of wind electricity generation vanes. The epoxy resin system is composed of epoxy resin and active diluent that match. Weight ratio of epoxy resin and active diluent is 55:45 to 85:15. The epoxy resin system is mixed with curing agent according to weight ratio of epoxy resin: curing agent=100:20 to 40. Curing difficulty is 60 DEG C / 15h or 80 DEG C / 8h to obtain casting bodies of wind electricity generation vanes. The epoxy resin system of the invention has longer operation time, low system viscosity and great fiber leachability. Each of performances of the cured casting bodies satisfies use standard of nationally regulated wind electricity generation vane, which is adapted to large composite material of wind vanes.

Description

technical field [0001] The invention relates to the technical field of high polymer materials, in particular, the invention relates to an epoxy resin system used in the casting process of wind power blades. Background technique [0002] At present, my country attaches great importance to the wind power generation business, and the installed capacity of wind power continues to increase, and the amount of epoxy resin used in the casting process of wind power blades is also increasing. However, the epoxy resin in the wind power blades produced in my country now relies on foreign imports. Imported materials such as epoxy resin are not only expensive, but also have a tight supply chain, which largely affects the normal production and production of domestic enterprises. profit level. Therefore, it is very important to invent epoxy resins suitable for use in wind power generation, which can create conditions for domestic blade manufacturers to effectively reduce production costs an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08K5/06C08K5/16F03D1/06F03D3/06B29C39/00
CPCY02E10/72Y02E10/721Y02E10/74Y02P70/50
Inventor 刘宵刘爱学邓凯桓王进刘建勋
Owner 株洲时代工程塑料制品有限责任公司
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